【摘要】 为了得到高质量的正弦信号，本文介绍了一种数字式的正弦信号发生器，以晶振为主振，以数字方法形成阶梯正弦信号，再经滤波而形成良好的正弦波形，实验表明，其频率稳定，幅度稳定，谐波失真小，波形良好更多还原

【Abstract】 In order to obtain good-quality sin signal, in this paper a kind of digital sin signal generator is presented.The crystsl oscillator is used as main oscillator and the step sinasoidal wave is formed by shift register a good quality sin-signat is fromed by LP filter the experiment demonstrates, frequenc and amplitude are stable, harmonious distoration is small.更多还原